page {
    z-index: 1;
}

//通用样式
.jz-hover {
    background-color: #ececec;
}

.clearfix:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

.error {
    color: red;
    font-size: 30rpx;
    width: 100%;
    text-align: center;
}

.course-tree {
    margin-top: 30rpx;
    font-size: 28rpx;
    color: #757575;
    padding: 0 30rpx;
    .icon-chapter {
        color: #9B9B9B;
        margin-right: 20rpx;
    }
    .check {
        display: inline-block;
        line-height: 80rpx;
        .icon-check {
            color: #14CC76;
            font-size: 20rpx;
        }
    }
    .cat-txt {
        margin: 20rpx 0;
        &.first {
            font-size: 32rpx;
            font-weight: bold;
            color: #4A4A4A;
            justify-content: space-between;
            .check {
                line-height: 30rpx;
            }
        }
    }
    .sub-cat {
        margin: 0 0 0 60rpx;
        .sec-cat {
            margin: 10rpx 0;
            .cat-txt {
                display: inline-block;
                margin: 10rpx 0;
            }
        }
        .third-cat {
            margin: 10rpx 0;
            padding-left: 20rpx;
        }
    }
}

.course-filter,
.knowledge-filter {
    float: left;
    width: 50%;
    text-align: center;
    height: 80rpx;
    line-height: 80rpx;
    align-content: center;
    justify-content: center;
    background: #F7F7F7;
    font-size: 28rpx;
    .u-arrow {
        margin-left: 10rpx;
    }
    &.active {
        color: #14CC76;
        .u-arrow-up {
            border-top-color: #14CC76;
        }
    }
}

.shade {
    width: 100%;
    // height:100%;
    top: 80rpx;
    background: rgba(0, 0, 0, 0.5);
    overflow: hidden;
    z-index: 1000;
    position: absolute;
}

.conts {
    box-shadow: 0 8rpx 16rpx 0px rgba(0, 0, 0, .1);
    width: 100%;
    background: #fff;
    // position: fixed;
    // top: 80rpx;
    padding: 40rpx 0;
    font-size: 24rpx;
    .filter-name {
        margin-left: 32rpx;
        color: #9B9B9B;
        margin-bottom: 14rpx;
    }
    .knowledge-box {}
    .grade-box,
    .subject-box {
        padding: 0 32rpx;
        .item {
            overflow: hidden;
            position: relative;
            text-align: center;
            background: #F1F1F1;
            border-radius: 28rpx;
            color: #757575;
            line-height: 56rpx;
            white-space: nowrap;
            margin: 14rpx 0 30rpx 0;
            border: 2rpx solid transparent;
            padding: 0 6rpx;
            &.c-active,
            &.active {
                background: rgba(20, 204, 118, .1);
                color: #07D0B0;
                border-color: #14CC76;
            }
        }
    }
    .sure-choose {
        width: 690rpx;
        height: 80rpx;
        background: #14CC76;
        border-radius: 40rpx;
        margin: 60rpx auto 0 auto;
        font-size: 32rpx;
        text-align: center;
        line-height: 80rpx;
        color: #fff;
    }
}

.video-box {
    background: #fff;
    padding: 40rpx;
    margin-top: 20rpx;
    font-size: 0;
    min-height: 1300rpx;
    .video {
        margin-bottom: 60rpx;
        display: inline-block;
        margin-right: 0;
        text-align: center;
        &:nth-child(2n + 1) {
            margin-right: 23rpx;
        }
        .cover {
            width: 320rpx;
            height: 180rpx;
            border-radius: 16rpx;
            position: relative;
            image {
                width: 100%;
                height: 180rpx;
                border-radius: 16rpx;
            }
            .video-tip {
                position: absolute;
                right: 10rpx;
                bottom: 10rpx;
                height: 32rpx;
                min-width: 104rpx;
                border-radius: 16rpx;
                background: rgba(33, 33, 33, 0.8);
                text {
                    color: #ffffff;
                    font-size: 20rpx;
                    line-height: 32rpx;
                }
                image {
                    width: 16rpx;
                    height: 16rpx;
                    margin-right: 6rpx;
                }
            }
        }
        .video-title {
            text-align: left;
            width: 320rpx;
            height: 80rpx;
            font-size: 28rpx;
            line-height: 40rpx;
            margin-top: 20rpx;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .video-knowledge {
            text-align: left;
            width: 320rpx;
            color: #14cc76;
            font-size: 24rpx;
            line-height: 34rpx;
            height: 34rpx;
            margin-top: 10rpx;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-box-orient: vertical;
        }
    }
}